Self-adjusting cylinder-ring.



SELF ADJUSTING IIIIIIIIIII G.

1 APPLIOATIONIILEI) MAY2 66666 4.

Patented April 4, 1905.

MICHAEL J. KILROY, OF NEW YORK, N. Y.

SELF-ADJUSTING CYLINDER-RING.

SPECIFICATION forming part of Letters Patent No. 786,446, dated April 4, 1905.

Application filed May 25, 1904. Serial No. 209,707.

To all whom/it may concern:

. Be it known that I, MICHAEL J. KILRoY,a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Self-Adjusting Cylinder-Ring, of which the following is a full, clear, and exact description.

My invention relates to that class of pistonpackings known as metallic piston-packings, which are used for steam, air, and other engines, as well as pumps of various kinds.

The purpose of my invention is to provide a construction of steam-ring and bull-ring for a cylinder and a connection between the two, whereby the steam ring or rings will be forced by the pressure of the steam to accommodate themselves to any irregularities they may meet in the inner surface of the cylinder and yet be held against end movement.

Another purpose of the invention is to provide a middle ring located between the bullrings and a corrugated-spring backing for the said middle ring, which will force it to conform to the bore of the cylinder.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indi cate corresponding parts in all the figures.

Figure 1 is a vertical section through a portion of a cylinder and through a piston-head having the improved packing applied. Fig. 2 is a section taken practically on the line 2 2 of Fig. 3, illustrating the manner in which the steam-ring is connected with a bull-ring. Fig. 3 is a section taken substantially on the line 3 3 of Fig. 2. Fig. 4 is a section taken substantially on the line 4 4 of Fig. 3. Fig. 5 is a view similar to that shown in Fig. 2, illus trating another manner in which the steamring may be connected with the bull-ring. Fig. 6 is a view similar to Fig. 5, illustrating another slight departure in the manner of connecting the steam-ring with a bull-ring, and Fig. 7 is a side view of a portion of the spring employed in connection with the packing.

A represents a cylinder, and B a piston adapted to operate in the cylinder through the medium of the ordinary rod C. This piston is provided with bull-rings 10, distributed in the usual manner, and between the bullrings what may be termed a "packing or central ring 11 is located, which is held up to its work by a spring 12, which is corrugated, so that the said packing-ring as the piston passes through the cylinder will accommodate itself to the irregularities in the interior of the cylinder.

The main feature of my invention relates to the attachment of the steam-rings D to the bull-rings 10, so that the said steam-rings can automatically, under the force of the steam, accommodate themselves to the interior surface of the cylinder A. These steam-rings, as is illustrated, are of annular construction, and usually saidsteam-rings D are provided with recesses 13 in their inner faces, adapted to receive ribs 14, extending from the bullring in connection with which they operate. These recesses 13 and ribs 14 do not extend throughout the circumference of the steamrings or the circumference of the bull-rings, but only for a sufficient length to prevent the steam-ring from having undue end movement in the action of the piston, as is shown in Fig. 3. It will be observed that as the steam-rings D are cut the said rings are capable of expansion and contraction under the influence of the steam.

In Fig. 5 I have shown a slight departure from the construction shown in Figs. 1, 2,, and 3 in that the steam-rings D are provided with recesses 15 and the bull-rings 10 with corresponding recesses 16,and in securing the steamrings to the bull-rings under this construction a key 17 is made to enter the two recessses 15 and 16 more or less loosely.

In Fig. 6 I have shown another slight departure in which the bull-ring 10 is provided with a recess 18, and the steam-ring D, acting in conjunction with the bull-ring, has a tongue 19 produced thereon, adapted to enter the said recess 18.

Under the constructions shown it is obvious that the steam-rings D may be made very light and yet be brought in proper connection with the bull-rings and that the steam-rings will have the necessary play both vertically and laterally. It is obvious that the said steamrings are rendered exceedingly strong at their normally weakest point under the ordinary construction.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A piston, bull-rings integral therewith, steam-rings operating in conjunction with the bull-rings, and a tongueand-groove connection between the steam-rings and the bullrings, as described.

2. In a cylinder-piston, bull-rings integral therewith, and steam-rings having play in the peripheral portion of the said piston adjacent to the bull-rings, the bull-rings being provided with tongues and the steam-rings with recesses to receive the said tongues, as described.

3. A cylinder, a piston mounted in the said cylinder, bull-rings integral with the said piston, and split steam-rings carried by the piston adjacent to the bull-rings, having looking engagement with the bull-rings at a portion of their length, the said steam-rings being capable of expansion under steam in direction of the interior of the cylinder in which the piston operates.

' 4. A cylinder, a piston operating in the cylinder, bull-rings on the peripheral portion of the piston, steam-rings at the outer side of the bull-rings and having key connection with the 

